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Process Logic (PL) is a language for reasoning about the behavior of a program during a computation, while Propositional Dynamic Logic (PDL) can only reason about the input-output states of a program. Nevertheless, we show that to each PL model M there corresponds in a natural way a PDL, model Mt such that every path in M is represented by a state in Mt. Moreover, to every PL formula p there corresponds...
We consider a restricted propositional dynamic logic, Strict Deterministic Propositional Dynamic Logic (SDPDL), which is appropriate for reasoning about deterministic well-structured programs. In contrast to PDL, for which the validity problem is known to be complete in deterministic exponential time, the validity problem for SDPDL is shown to be polynomial space complete. We also show that SDPDL...
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